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Punch Card Feeding Mechanism

Publishing Venue

IBM

Related People

Hilpert, F: AUTHOR

Abstract

The arrangement uses a carriage periodically reciprocated in the card feeding direction. It has a gripper device for holding the cards in position when moving in the feeding direction and releasing them when moving in the opposite direction. It is adapted for large feeding steps.

Country

United States

Language

English (United States)

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Punch Card Feeding Mechanism

The arrangement uses a carriage periodically reciprocated in the card
feeding direction. It has a gripper device for holding the cards in position when
moving in the feeding direction and releasing them when moving in the opposite
direction. It is adapted for large feeding steps.

Cards 1 pass through a path defined by base plate 2 and cover plate 3.
Mounted on each side of the path is U-shaped bar 4 which is displaceable in the
card feeding direction. The upper free flanks of bar 4 extend across cards 1. On
their lower free flanks, bars 4 support engageable and disengageable clamps by
which the cards can be pressed against the upper flanks. The clamps have
elastic strips 5 clamped in position at one end of them. For actuating the clamps,
a slide 6, displaceable in the feeding direction, is mounted behind the base of bar 4. Attached to slide 6 are pins 7 which through elongated holes 8, provided in the
U-shaped bar 4, engage elastic strips 5.

In the non-operated condition, pins 7 are positioned at the right ends of
elongated holes 8 in bar 4. With slide 6 moving in the feeding direction under the
action of cam 9 and spring 10, elastic strips 5 are raised, thus pressing the
punched cards against bar 4. After pins 7 reach the left edge of elongated holes
8, they, in continued movement in the feeding direction, move along the bars 4
together with the clamped cards.

After the extreme position has been reached and when slide 6 starts to mov...